non-circular gear termin techniczny , NCG (skrót)

In the case of non-circular gears, those circles are replaced with anything different from a circle.

Non-circular gears are designed for special purposes.

A non-circular gear (NCG) is a special gear design with special characteristics and purpose.

While a regular gear is optimized to transmit torque to another engaged member with minimum noise and wear and maximum efficiency, a non-circular gear's main objective might be ratio variations, axle displacement oscillations and more.